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Location:
Sydney
Registered:
September 2004
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Location:
Somewhere on a dirt bowl ...
Registered:
August 2004
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Re: 4age conrods
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Fri, 11 March 2005 13:58
 
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One question.
Why ?
Wouldn't it be better to use the whole she-bang ?
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Location:
Sydney
Registered:
September 2004
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Re: 4age conrods
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Fri, 11 March 2005 21:51
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| towe_001 wrote on Sat, 12 March 2005 00:58 |
One question.
Why ?
Wouldn't it be better to use the whole she-bang ?
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1. I want something a little different.
2. New GZE pistons are dirt cheap.
3. Bigport bottom has lighter internals.
4. I may have access to a spare set of bigport conrods.
5. I have access to an x-ray machine.
6. So why not? 
Eddie.
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Location:
qld
Registered:
December 2003
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Re: 4age conrods
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Sat, 12 March 2005 01:25
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i have heard its been done before... got a spare 4ac rod? same as big port apparently. theres one laying on the ground (4ac rod) where im headed in about an hour, ill check it out/ask if i can borrow it.
best thing would be take one to an engine builder and ask their oppinion.
theyre actually only taking 1mm of material off.
i have ideas of doing the same, but for an na project.
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Location:
Sydney
Registered:
September 2004
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Re: 4age conrods
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Sat, 12 March 2005 07:29
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| slydar wrote on Sat, 12 March 2005 12:25 |
got a spare 4ac rod? same as big port apparently.
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Can anyone else confirm this? That would mean I ALREADY have two spare sets of conrods  which would be quite handy.
Let me know how you go with your project slydar. I'm still tossing up between the tried and true method of sticking a bigport head onto a 7 rib block or redrilling.
Eddie.
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Location:
Somewhere on a dirt bowl ...
Registered:
August 2004
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Re: 4age conrods
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Sat, 12 March 2005 09:30
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| Big T wrote on Sat, 12 March 2005 08:51 |
| towe_001 wrote on Sat, 12 March 2005 00:58 |
One question.
Why ?
Wouldn't it be better to use the whole she-bang ?
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1. I want something a little different.
2. New GZE pistons are dirt cheap.
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How much ?
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3. Bigport bottom has lighter internals.
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One of the reasons why i'm staying bigport.
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Location:
Sydney
Registered:
September 2004
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Re: 4age conrods
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Sat, 12 March 2005 09:53
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| towe_001 wrote on Sat, 12 March 2005 20:30 |
| Big T wrote on Sat, 12 March 2005 08:51 |
2. New GZE pistons are dirt cheap.
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How much ?
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$380 the last time I got a quote which was only about a 1 1/2 months ago. I plan on turbocharging the engine which is why I'm getting GZE pistons.
Eddie.
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Club Member
Location:
sydney
Registered:
May 2002
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Re: 4age conrods
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Sat, 12 March 2005 10:08
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got a spare 4ac rod? same as big port apparently
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im pissed (drunk) but your stillan idiot, that s the most pathetic statement ive ever read!
your a drop kick!!
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Location:
Sydney
Registered:
September 2004
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Re: 4age conrods
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Sat, 12 March 2005 10:15
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| IRA11Y wrote on Sat, 12 March 2005 21:08 |
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got a spare 4ac rod? same as big port apparently
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im pissed (drunk) but your stillan idiot, that s the most pathetic statement ive ever read!
your a drop kick!!
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Thanks for the drunken clarification Michael And surely its not THE most pathetic statement to date  Looks like I'll have to try and get that spare bigport set then.
Eddie.
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Location:
Somewhere on a dirt bowl ...
Registered:
August 2004
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Re: 4age conrods
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Sat, 12 March 2005 10:30
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| IRA11Y wrote on Sat, 12 March 2005 21:08 |
im pissed (drunk)
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Bastard 
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Club Member
Location:
sydney
Registered:
May 2002
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Club Member
Location:
sydney
Registered:
May 2002
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Re: 4age conrods
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Sat, 12 March 2005 10:48
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Did i go a little overboard there?? remind me to stop drinking in the mornig
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Location:
Somewhere on a dirt bowl ...
Registered:
August 2004
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Re: 4age conrods
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Sat, 12 March 2005 10:58
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Just a little.....
I just said that cause i haven't been pissed for fuck knows how long now.
You know, work, work, no time for play little rest, above and beyond the call of duty and all that crap with work.....
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Location:
Eastern Sydney
Registered:
May 2002
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Re: 4age conrods
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Sat, 12 March 2005 10:59
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fair call in my book. people need to be told when they're posting misinformation.
personally,I wouldn't be taking 2mm out of a gudgeon pin bore.
especially when they're only a few mm thick to begin with.
you're much better off running the 20mm rods if you want to use the cheap pistons,or finding something else with 18mm pins if you don't want to buy another set of rods and a crank.
if you look around you could likely find a short 100kw 4AGE for less than $300. hell,I bought a complete engine a year ago for $100.....
Justin...
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Club Member
Location:
sydney
Registered:
May 2002
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Re: 4age conrods
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Sat, 12 March 2005 10:59
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ok sorry 
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Location:
Somewhere on a dirt bowl ...
Registered:
August 2004
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Re: 4age conrods
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Sat, 12 March 2005 11:07
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| IRA11Y wrote on Sat, 12 March 2005 21:59 |
ok sorry
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Its cool
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Location:
qld
Registered:
December 2003
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Re: 4age conrods
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Sun, 13 March 2005 09:44
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1rally - ive never directly compared the 2 rods side by side, and notice i did say "apparently". i did find it a surprise, but the person who told me that is VERY knowlegeable. have you compared the 2 yourself? of cousre there could be a material differance, and also the 4ag ones would better balanced..
i had a look at the 4ac rod in question. just by looking it does seem to be cutting it a bit close.
but.. fergo308... youre not taking 2mm out.. only 1mm of material off = a 2mm increse in bore. what i mean is youre only running 1mm in total closer to what you would assume would be the crital area, the part at the top very top of the rod where it is thinnest already.
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Club Member
Location:
sydney
Registered:
May 2002
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Location:
qld
Registered:
December 2003
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Re: 4age conrods
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Sun, 13 March 2005 10:13
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cool. i am wrong, in that i am misimformed myself.
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Location:
Somewhere on a dirt bowl ...
Registered:
August 2004
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Re: 4age conrods
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Mon, 14 March 2005 01:54
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Something from left field, but could it be possible to change the compression a little (like half a point, maybe) by re-centring the bigend on the conrod.
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: 4age conrods
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Mon, 14 March 2005 02:42
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yes, but it would be much much safer to change the combustion chamber volume to do that.
of all the parts in an engine, conrods are one that i would hesitate to modify greatly... even the pistons aren't taking as much force as the rods.
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you, tell someone who gives a 